# Differences

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 phy127:hw3 [2011/02/21 13:54]mvfernandezserra phy127:hw3 [2011/02/21 13:56] (current)mvfernandezserra Both sides previous revision Previous revision 2011/02/21 13:56 mvfernandezserra 2011/02/21 13:54 mvfernandezserra 2011/02/20 12:50 mvfernandezserra 2011/02/20 11:14 mvfernandezserra created 2011/02/21 13:56 mvfernandezserra 2011/02/21 13:54 mvfernandezserra 2011/02/20 12:50 mvfernandezserra 2011/02/20 11:14 mvfernandezserra created Line 62: Line 62: We have a nonconducting sphere, with a total charge Q uniformly distributed throughout its volume. The E field inside the sphere is We have a nonconducting sphere, with a total charge Q uniformly distributed throughout its volume. The E field inside the sphere is not zero, because it is not a conductor and there is charge everywhere inside. We define to regions: rro (outside).\\ not zero, because it is not a conductor and there is charge everywhere inside. We define to regions: rro (outside).\\ - We also make use of the charge density instead of the total charge: $\sigma=\frac{Q}{4/​3\pir_0^3}$\\ + We also make use of the charge density instead of the total charge: $\sigma=\frac{Q}{4/​3\pi r_0^3}$\\ Inside, r